change all workgroup names to TWG / SIG

Signed-off-by: Toshaan Bharvani <toshaan@vantosh.com>

content/groups/accelerator.md

@@ -1,6 +1,6 @@
 ---
-title: 'Accelerator Workgroup'
-wgtype: sig
+title: 'Accelerator TWG'
+wgtype: twg
 image: thumb-5.jpg
 chair:
   - curtwollbrink

content/groups/compliance.md

@@ -1,5 +1,5 @@
 ---
-title: 'Compliance Workgroup'
+title: 'Compliance TWG'
 wgtype: twg
 image: thumb-2.jpg
 chair:

content/groups/hpc.md

@@ -1,5 +1,5 @@
 ---
-title: 'High-Performance-Computing Workgroup'
+title: 'High-Performance-Computing SIG'
 wgtype: sig
 image: thumb-3.jpg
 chair:
@@ -9,6 +9,7 @@ members:
   - ibm
   - innoboost
   - yadro
+  - vantosh
 date: 2021-03-15
 draft: false
 ---

content/groups/isa.md

@@ -8,7 +8,6 @@ members:
   - ibm
   - yadro
   - inspurpowersystems
-  - raptorcomputingsystems
 participation: 'Members'
 git: https://git.openpower.foundation/isa/
 discussion: https://discuss.openpower.foundation/c/twg/isa

content/groups/machinelearning.md

@@ -1,5 +1,5 @@
 ---
-title: 'Machine Learning AI Work Group'
+title: 'Machine Learning & AI SIG'
 wgtype: sig
 image: thumb-2.jpg
 chair:

content/groups/memory.md

@@ -1,6 +1,6 @@
 ---
-title: 'Memory Workgroup'
-wgtype: twg
+title: 'Memory SIG'
+wgtype: sig
 image: thumb-1.jpg
 chair:
   - pierreluccantin
@@ -9,6 +9,7 @@ members:
   - ibm
   - google
   - vantosh
+  - universityoforegan
 date: 2021-03-15
 draft: false
 ---

content/groups/powerpi.md

@@ -1,5 +1,5 @@
 ---
-title: 'PowerPi Workgroup'
+title: 'PowerPi SIG'
 wgtype: sig
 image: thumb-1.jpg
 chair:
@@ -8,7 +8,6 @@ members:
   - ibm
   - yadro
   - vantosh
-  - chipeleven
 date: 2021-03-15
 draft: false
 ---